Masaccio Duralong Special Self-Assembly Box with Back Light Gray 1.4 mm 430x310x80 mm

The “Masaccio” back-opening boxes are made from Duralong Special archival board and Duralong Basic economical board, ideal for long-term horizontal storage. The drop spine allows safe insertion and removal of works, and the box provides a microenvironment protected from chemical and physical changes (dust, light, environmental pollutants). Extremely strong and rigid with double-thickness walls on three sides of the base and one lid. Easy to assemble thanks to small self-locking flaps that fit into the double wall.